 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.update.core;

 import org.eclipse.core.runtime.*;

 /**
  * Site Feature reference.
  * A reference to a feature on a particular update site.
  * <p>
  * Clients may implement this interface. However, in most cases clients should
  * directly instantiate or subclass the provided implementation of this
  * interface.
  * </p>
  * <p>
  * <b>Note:</b> This class/interface is part of an interim API that is still under development and expected to
  * change significantly before reaching stability. It is being made available at this early stage to solicit feedback
  * from pioneering adopters on the understanding that any code that uses this API will almost certainly be broken
  * (repeatedly) as the API evolves.
  * </p>
  * @see org.eclipse.update.core.SiteFeatureReference
  * @since 2.1
  */
 public interface ISiteFeatureReference extends IFeatureReference, IAdaptable {

     /**
      * Returns an array of categories the referenced feature belong to.
      *
      * @return an array of categories, or an empty array
      * @since 2.1
      */
     public ICategory[] getCategories();

     /**
      * Adds a category to the referenced feature.
      *
      * @param category new category
      * @since 2.1
      */
     public void addCategory(ICategory category);

 }

